Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 243 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
new file mode 100644
index 000000000..a4bad322f
--- /dev/null
+++ b/drivers/media/radio/radio-trust.c
@@ -0,0 +1,243 @@
+/* radio-trust.c - Trust FM Radio card driver for Linux 2.2
+ * by Eric Lammerts <eric@scintilla.utwente.nl>
+ *
+ * Based on radio-aztech.c. Original notes:
+ *
+ * Adapted to support the Video for Linux API by
+ * Russell Kroll <rkroll@exploits.org>.  Based on original tuner code by:
+ *
+ * Quay Ly
+ * Donald Song
+ * Jason Lewis      (jlewis@twilight.vtc.vsc.edu)
+ * Scott McGrath    (smcgrath@twilight.vtc.vsc.edu)
+ * William McGrath  (wmcgrath@twilight.vtc.vsc.edu)
+ *
+ * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org>
+ */
+
+#include <stdarg.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/videodev2.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include "radio-isa.h"
+
+MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
+MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.1.99");
+
+/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
+
+#ifndef CONFIG_RADIO_TRUST_PORT
+#define CONFIG_RADIO_TRUST_PORT -1
+#endif
+
+#define TRUST_MAX 2
+
+static int io[TRUST_MAX] = { [0] = CONFIG_RADIO_TRUST_PORT,
+			      [1 ... (TRUST_MAX - 1)] = -1 };
+static int radio_nr[TRUST_MAX] = { [0 ... (TRUST_MAX - 1)] = -1 };
+
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the Trust FM Radio card (0x350 or 0x358)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
+
+struct trust {
+	struct radio_isa_card isa;
+	int ioval;
+};
+
+static struct radio_isa_card *trust_alloc(void)
+{
+	struct trust *tr = kzalloc(sizeof(*tr), GFP_KERNEL);
+
+	return tr ? &tr->isa : NULL;
+}
+
+/* i2c addresses */
+#define TDA7318_ADDR 0x88
+#define TSA6060T_ADDR 0xc4
+
+#define TR_DELAY do { inb(tr->isa.io); inb(tr->isa.io); inb(tr->isa.io); } while (0)
+#define TR_SET_SCL outb(tr->ioval |= 2, tr->isa.io)
+#define TR_CLR_SCL outb(tr->ioval &= 0xfd, tr->isa.io)
+#define TR_SET_SDA outb(tr->ioval |= 1, tr->isa.io)
+#define TR_CLR_SDA outb(tr->ioval &= 0xfe, tr->isa.io)
+
+static void write_i2c(struct trust *tr, int n, ...)
+{
+	unsigned char val, mask;
+	va_list args;
+
+	va_start(args, n);
+
+	/* start condition */
+	TR_SET_SDA;
+	TR_SET_SCL;
+	TR_DELAY;
+	TR_CLR_SDA;
+	TR_CLR_SCL;
+	TR_DELAY;
+
+	for (; n; n--) {
+		val = va_arg(args, unsigned);
+		for (mask = 0x80; mask; mask >>= 1) {
+			if (val & mask)
+				TR_SET_SDA;
+			else
+				TR_CLR_SDA;
+			TR_SET_SCL;
+			TR_DELAY;
+			TR_CLR_SCL;
+			TR_DELAY;
+		}
+		/* acknowledge bit */
+		TR_SET_SDA;
+		TR_SET_SCL;
+		TR_DELAY;
+		TR_CLR_SCL;
+		TR_DELAY;
+	}
+
+	/* stop condition */
+	TR_CLR_SDA;
+	TR_DELAY;
+	TR_SET_SCL;
+	TR_DELAY;
+	TR_SET_SDA;
+	TR_DELAY;
+
+	va_end(args);
+}
+
+static int trust_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
+{
+	struct trust *tr = container_of(isa, struct trust, isa);
+
+	tr->ioval = (tr->ioval & 0xf7) | (mute << 3);
+	outb(tr->ioval, isa->io);
+	write_i2c(tr, 2, TDA7318_ADDR, vol ^ 0x1f);
+	return 0;
+}
+
+static int trust_s_stereo(struct radio_isa_card *isa, bool stereo)
+{
+	struct trust *tr = container_of(isa, struct trust, isa);
+
+	tr->ioval = (tr->ioval & 0xfb) | (!stereo << 2);
+	outb(tr->ioval, isa->io);
+	return 0;
+}
+
+static u32 trust_g_signal(struct radio_isa_card *isa)
+{
+	int i, v;
+
+	for (i = 0, v = 0; i < 100; i++)
+		v |= inb(isa->io);
+	return (v & 1) ? 0 : 0xffff;
+}
+
+static int trust_s_frequency(struct radio_isa_card *isa, u32 freq)
+{
+	struct trust *tr = container_of(isa, struct trust, isa);
+
+	freq /= 160;	/* Convert to 10 kHz units	*/
+	freq += 1070;	/* Add 10.7 MHz IF		*/
+	write_i2c(tr, 5, TSA6060T_ADDR, (freq << 1) | 1,
+			freq >> 7, 0x60 | ((freq >> 15) & 1), 0);
+	return 0;
+}
+
+static int basstreble2chip[15] = {
+	0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
+};
+
+static int trust_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct radio_isa_card *isa =
+		container_of(ctrl->handler, struct radio_isa_card, hdl);
+	struct trust *tr = container_of(isa, struct trust, isa);
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_BASS:
+		write_i2c(tr, 2, TDA7318_ADDR, 0x60 | basstreble2chip[ctrl->val]);
+		return 0;
+	case V4L2_CID_AUDIO_TREBLE:
+		write_i2c(tr, 2, TDA7318_ADDR, 0x70 | basstreble2chip[ctrl->val]);
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static const struct v4l2_ctrl_ops trust_ctrl_ops = {
+	.s_ctrl = trust_s_ctrl,
+};
+
+static int trust_initialize(struct radio_isa_card *isa)
+{
+	struct trust *tr = container_of(isa, struct trust, isa);
+
+	tr->ioval = 0xf;
+	write_i2c(tr, 2, TDA7318_ADDR, 0x80);	/* speaker att. LF = 0 dB */
+	write_i2c(tr, 2, TDA7318_ADDR, 0xa0);	/* speaker att. RF = 0 dB */
+	write_i2c(tr, 2, TDA7318_ADDR, 0xc0);	/* speaker att. LR = 0 dB */
+	write_i2c(tr, 2, TDA7318_ADDR, 0xe0);	/* speaker att. RR = 0 dB */
+	write_i2c(tr, 2, TDA7318_ADDR, 0x40);	/* stereo 1 input, gain = 18.75 dB */
+
+	v4l2_ctrl_new_std(&isa->hdl, &trust_ctrl_ops,
+				V4L2_CID_AUDIO_BASS, 0, 15, 1, 8);
+	v4l2_ctrl_new_std(&isa->hdl, &trust_ctrl_ops,
+				V4L2_CID_AUDIO_TREBLE, 0, 15, 1, 8);
+	return isa->hdl.error;
+}
+
+static const struct radio_isa_ops trust_ops = {
+	.init = trust_initialize,
+	.alloc = trust_alloc,
+	.s_mute_volume = trust_s_mute_volume,
+	.s_frequency = trust_s_frequency,
+	.s_stereo = trust_s_stereo,
+	.g_signal = trust_g_signal,
+};
+
+static const int trust_ioports[] = { 0x350, 0x358 };
+
+static struct radio_isa_driver trust_driver = {
+	.driver = {
+		.match		= radio_isa_match,
+		.probe		= radio_isa_probe,
+		.remove		= radio_isa_remove,
+		.driver		= {
+			.name	= "radio-trust",
+		},
+	},
+	.io_params = io,
+	.radio_nr_params = radio_nr,
+	.io_ports = trust_ioports,
+	.num_of_io_ports = ARRAY_SIZE(trust_ioports),
+	.region_size = 2,
+	.card = "Trust FM Radio",
+	.ops = &trust_ops,
+	.has_stereo = true,
+	.max_volume = 31,
+};
+
+static int __init trust_init(void)
+{
+	return isa_register_driver(&trust_driver.driver, TRUST_MAX);
+}
+
+static void __exit trust_exit(void)
+{
+	isa_unregister_driver(&trust_driver.driver);
+}
+
+module_init(trust_init);
+module_exit(trust_exit);